Answer:
90 degrees
Step-by-step explanation:
angle ABC is a right angle
Answer:
The answer is B.
Step-by-step explanation:
If this is wrong im very very sorry!
A brainlist would be appreciated! I'm almost an expert!
Answer:
Hence the value for the mean is 80 and the standard deviation for the original sample is 8.
Step-by-step explanation:
Mean = 83-3 = 80.
Here the standard deviation didn't change = 8.